首页
登录
职称英语
The vitamins necessary for a healthy body are normally supplied by a good m
The vitamins necessary for a healthy body are normally supplied by a good m
游客
2025-03-02
26
管理
问题
The vitamins necessary for a healthy body are normally supplied by a good mixed diet (饮食), including a variety of fruits and green vegetables. (79)
It is only when people try to live on a very restricted diet that it is necessary to make special provision to supply the missing vitamins.
An example of the dangers of a restricted diet may be seen in the disease known as “beri-beri”. (80)
It used to distress large numbers of Eastern peoples who lived mainly on rice.
In the early years of this century, a scientist named Eijkman was trying to discover the cause of “beri-beri”. At first he thought it was caused by a germ. He was working in a Japanese hospital, where the patients were fed on polished rice which had the outer husk (外壳) removed from the grain. It was thought this would be easier for weak and sick people to digest.
Eijkman thought his germ theory was confirmed when he noticed the chickens in the hospital yard, which were fed on leftovers (剩饭) from the patients’ plates, were also showing signs of the disease. He then tried to isolate the germ, but his experiments were interrupted by a hospital official, who declared that the polished rice, even though left over by the patients, was too good for chickens. It should be rebooked for the patients, and the chickens should be fed on cheap rice with the outer layer still on the grain.
Eijkman noticed that the chickens began to recover on the new diet. He began to consider the possibility that eating unpolished rice somehow prevented or cured “beri-beri” even that a lack of some element in the husk might be the cause of the disease. Indeed this was the case. The element needed to prevent “beri-beri” was shortly afterwards isolated from rice husks and is now known as vitamin B. Nowadays, this terrible disease is much less common thanks to our knowledge of vitamins. [br] A good mixed diet______
选项
A、normally contains enough vitamins
B、still needs special provision of vitamins
C、is suitable for losing weight
D、is composed of fruits and vegetables
答案
A
解析
本题考查考生对文章细节的理解。根据关键词定位到第一段第一句话,可知混合性的食物一般来说能够提供足够的维生素。因此选择A。B项张冠李戴,应该是restricted diet需要特别补充。C项未提到。D项由蔬果组成,显然也不对,因为后文还提到了rice。
转载请注明原文地址:http://tihaiku.com/zcyy/3979184.html
相关试题推荐
Thedoctorwillnotperformtheoperation______itisabsolutelynecessary.A、soB
Stressfulenvironmentsleadtounhealthysuchaspooreatinghabits,which_____
Becausethecompanywasdoingmorebusiness,itwasnecessaryto________thefa
Itisnecessarythatwe________haveagoodcommandofEnglishatcollege.A、mus
Normallyastudentmustattendanumberofcoursesinordertograduate,and
Hewashealthyandstrong,buthehadverylittleformaleducation.他身体健康、强壮,但是接受
他告诉我要慢慢来,没有必要提前完成这项工作。Hetoldmetotakeiteasy,becauseitwasnotnecessaryt
Thevitaminsnecessaryforahealthybodyarenormallysuppliedbyagoodm
Thevitaminsnecessaryforahealthybodyarenormallysuppliedbyagoodm
Thevitaminsnecessaryforahealthybodyarenormallysuppliedbyagoodm
随机试题
•Readthearticlebelowaboutsmallhigh-techfirms.•Foreachquestion31—40,w
Schoolfees,illness,houserepairsandother______havereducedhisbankbalanc
UniversitiesBranchOutA)Asneverbeforeintheirlong
某新建高速公路交工验收,用单轮式横向力系数测试车两种方法检测沥青混凝土路面的摩擦
静脉补钾的浓度限制应该是每升输液中含钾量不宜超过A、10mmol B、20m
根据《建筑业企业资质管理规定》,劳务分包序列企业的资质设()等级,()资质类别。
请根据以下资料对经济增长速度、经济结构等进行计算和分析,在下列备选答案中选出正确
胆盐可协助下列哪一种酶消化食物A.胰蛋白酶 B.糜蛋白酶 C.胰脂肪酶 D
A.蛋白质的构象改变 B.肽键断裂 C.亚基聚合 D.蛋白质聚集 E.二
尿培养的球菌菌落计数不低于多少才有诊断意义() A.100个/ml B.30
最新回复
(
0
)